尽管刀片承受着较高的切削比和较大的切削力,但现今制造出的刀片,其刀刃的寿命还是较以往的产品要高一倍之多。而且这些新刀片在获得较长寿命的同时,并不减少对材料的切除量,实际上,它们切除材料的速度是较快的。这些改进不仅仅是新发展了或改进了刀片牌号的结果,说得更确切一点也是改进刀具几何形状的结果(主要是加大了正前角,以减小刀具的切削应力)。新几何形状的刀片商品名称为“P+”(见图),这种刀片最重要的改进是性能较好。加大正前角和减小切屑与刀片前面的接触面积,这样就可以减小刀尖的切削力,使切削刃的温度变得有利于切削过程。当切屑达到最 Despite the higher cutting ratio and greater cutting forces, the blades now manufactured have a blade that is more than twice as long as its predecessor. And these new blades achieve longer life without sacrificing material removal, in fact they cut material faster. These improvements are not just the result of new blade grades or improvements, but rather the result of improved tool geometries (mainly positive ramps, which reduce the cutting stress on the tool). The new geometry of the blade trade name is “P +” (see photo), the most important improvement of this blade is better performance. Increase the front angle and reduce the contact area between the chip and the front of the blade, so you can reduce the cutting force of the tip, the cutting edge temperature becomes conducive to the cutting process. When the chip reaches the most